An electrical system for a mobile power generation device and a mobile power generation device are disclosed. The electrical system includes an electrical cabin and a generator switch cabinet located inside the electrical cabin and including a generator switch device, the generator switch device being configured to connect or disconnect the generator of the mobile power generation device from an external load, the electrical system further includes an auxiliary substation cabinet and an auxiliary substation switch device in the auxiliary substation device cabinet, the auxiliary substation cabinet is located inside the electrical cabin and includes an auxiliary substation device, the auxiliary substation device being configured to convert a first voltage output by the generator into a second voltage; and the auxiliary substation switch device is configured to turn on or turn off the auxiliary substation device, the first voltage being larger than the second voltage.

An electrical system for a mobile power generation device and a mobile power generation device are disclosed. The electrical system includes an electrical cabin and a generator switch cabinet located inside the electrical cabin and including a generator switch device, the generator switch device being configured to connect or disconnect the generator of the mobile power generation device from an external load, the electrical system further includes an auxiliary substation cabinet and an auxiliary substation switch device in the auxiliary substation device cabinet, the auxiliary substation cabinet is located inside the electrical cabin and includes an auxiliary substation device, the auxiliary substation device being configured to convert a first voltage output by the generator into a second voltage; and the auxiliary substation switch device is configured to turn on or turn off the auxiliary substation device, the first voltage being larger than the second voltage.

A portable hybrid generator system includes a first unit and a second unit. The first unit includes a first housing, a first output port, and a primary energy source disposed within the first housing. The primary energy source is electrically coupled to the first output port. The second unit is separate from the first unit. The second unit includes a second housing, an input port, a second output port, and an energy storage device disposed within the second housing. The energy storage device is electrically coupled to the input port and the second output port. The energy storage device includes at least one battery. The input port and the first output port facilitate selectively electrically coupling the first unit to the second unit to charge the energy storage device. The primary energy source is specifically calibrated or calibratable to charge the energy storage device based on the at least one battery.

A power generation plant includes a plant device, an AC motor for starting the plant device, at least one DC power source, and an inverter disposed between the at least one DC power source and the AC motor and between the at least one DC power source and an electrical power grid. The inverter is configured to convert DC power from the at least one DC power source to AC power and is capable of selectively supplying the AC power to the AC motor or the electrical power grid.

An apparatus includes a controlled field alternator or utility source of electrical power, a conversion device, and a controller. The conversion device includes a first power input associated with a first power source, a second power input associated with a second power source, and circuitry configured to perform a first conversion of power from a first format from the first power source to a second format for charging the second power source and perform a second conversion of power from the second format for the second power source to a third format for supplying a load.

An apparatus includes a controlled field alternator or utility source of electrical power, a conversion device, and a controller. The conversion device includes a first power input associated with a first power source, a second power input associated with a second power source, and circuitry configured to perform a first conversion of power from a first format from the first power source to a second format for charging the second power source and perform a second conversion of power from the second format for the second power source to a third format for supplying a load.

A power management system for home, apartment, facility and building circuits includes a grid inter-active system comprising a cord, an electrical connection to an outlet, and a connection to an external power producing appliance. In addition, the system includes a communication or automatic interface associated with a system that detects power outages or other grid or time related event.

A power management system for home, apartment, facility and building circuits includes a grid inter-active system comprising a cord, an electrical connection to an outlet, and a connection to an external power producing appliance. In addition, the system includes a communication or automatic interface associated with a system that detects power outages or other grid or time related event.

A power generation plant includes a plant device, an AC motor for starting the plant device, at least one DC power source, and an inverter disposed between the at least one DC power source and the AC motor and between the at least one DC power source and an electrical power grid. The inverter is configured to convert DC power from the at least one DC power source to AC power and is capable of selectively supplying the AC power to the AC motor or the electrical power grid.

Methods and apparatus according to various aspects of the present invention may operate in conjunction with a microgrid capable of connecting to a main electrical grid supplying electrical power at a frequency (or other characteristic, such as voltage). A sensor may provide a signal to a control system, wherein the signal corresponds to the frequency (or other characteristic) of the electrical power from the main electrical grid. The control system may compare the frequency (or other characteristic) of the electrical power from the main electrical grid to a first threshold, and automatically provide power from the microgrid to the main electrical grid if the frequency (or other characteristic) of the electrical power from the main electrical grid crosses the first threshold.